展开 (1/(x-3))+(1/(x(x-3)))

解答

展开

(\frac{1}{x - 3}) + (\frac{1}{x ( x - 3 )})

\frac{1}{x - 3} + \frac{1}{x ^{2} - 3 x}

求解步骤

(\frac{1}{x - 3}) + (\frac{1}{x ( x - 3 )})

去除括号:

(a) = a

= \frac{1}{x - 3} + \frac{1}{x ( x - 3 )}

乘开

x (x - 3) : x^{2} - 3 x

= \frac{1}{x - 3} + \frac{1}{x ^{2} - 3 x}

e x p an d \frac{( x - 8 ) ( x + 6 ) ( x + 7 )}{4 x ( x - 4 ) ^{2}}

e x p an d \frac{( 3 n + 1 ) ( 3 n + 2 )}{( 3 n + 4 ) ( 3 n + 5 )}

e x p an d (x y + y^{2} + x^{2}) d x - x^{2} d y

e x p an d \frac{4 ( x + 1 )}{( 4 x + 5 )}

e x p an d \frac{1}{2 ( - 23 x ^{3} + 92 )}